8 
eximie complanati, inferiori parte laxiuscule, superne conferte 
foliati, simplices vel parce ramulosi, centimetra duo longitudine 
subattingentes. Folia firmula, chartacea, iuniora e luteo-vires- 
centia, senescendo vix purpura lenissima basi suffusa, verticalia, 
biloba, acutissime complicata, plica anguste marginata, ad 
caulem patentissima, superne imbricata, ambitu denticulata, 
dentieulis plerumque unicellulosis, remotiusculis, in sicco vix 
corrugata. Ala dorsalis arcte incumbens, convexiuscula, obo- 
vata, vel obovato-subfalcata, subinde obtusissime subacutata, 
ventrali subdimidio minor. Ventralis a basi adpressa nonnihil 
apice decurva, facie exinde ventrali concava, latere interiore 
eximie decurrens, obovata, margine plic® respondente recto, 
vel ex margine ipso arcuato-obovato-falcata. Folia involu- 
cralia et præinvolucralia præeuntibus paullo ampliora, cœterum 
reliquis conformia. Perianthium unicum vidi, folia involucralia 
duplo excedens, obovato-truncatum, compressum, dorso obtuse 
plicatulum, ore integrum. Cellule foliorum peripheric® sub- 
quadratæ, centrales quadratæ, vel sæpius hexagon parietibus 
tenuibus instructæ. e a a 
Scapania undulata aequataeformis. Crescendi modo 
atque caulium divisione communiori S. undalatæ haud absimilis, 
sed rami ex foliis amplis valde confertis, crasse turgescenti- 
compressi. Foliorum complicatorum lobi interdum subæquales, 
vel dorsalis ventrali conspicue minor, a plica subreniformi- 
quadrangulus adpressus, in foliis inferioribus præsertim utrinque 
decurrens. Folia ewterum membranacea, valde flaccida, palles- 
centia, cellulis amplis, hexagonis, pentagonis, quadratieis, 
leptodermaticis contexta, margine haud denticulata. 
Scapania irrigua lumurians. Scapania irrigua * 
major Syn. Hepatic. 68. Flaccida, luride virens, conferte 
gregaria, centimetra 3-4 altitudine vix æquans. Caulis inferi- 
ori parte decumbens, foliorum reliquiis veslitus, aut demum 
prorsus denudatus, flexuosus, rhizomatoideus, vage divisus, et 
simul ramos stoloniformes edens, saturate fuscus. Rami sim- 
plices, erecti, vel vage e latere vel ex apice innovando ramu- 
losi. Folia verticalia disticha, in ramis superiorum annorum 
dense adproximato-imbricantia, fuscescenti-viridia, flaccida, in 
ramis novellis laxiora, minora, alque decurrentia, omnia com- 
plicato-biloba, acute carinata, integra, vel cellularum margina- 
lium una alterave protuberante, obsolete, remote, obtusissimeque 
denticulata. Lobi foliorum prorsus æquales, adpressi vel patuli, 
vel undati; dorsalis subrotundus raro apice subacutatus, ven— 
tralis obovato-rotundalus, obtusus, uterque latere plic® respon- 
dente truncati. Folia superiora anteridia 2—3 rotundata, pedi- 
cellata in axilla exhibent. Cellulas foliorum tenues, inæquales, 
pleræque hexagon, granulis chlorophylla' pallescentibus foete. 
